diff --git a/src/core_ex.cpp b/src/core_ex.cpp
index 1aba09fd..29e92bad 100644
--- a/src/core_ex.cpp
+++ b/src/core_ex.cpp
@@ -143,6 +143,10 @@ void wxPyCoreModuleInject(PyObject* moduleDict)
     PyDict_SetItemString(moduleDict, "_sizeof_longlong", PyLong_FromLong(sizeof(long long)));
     PyDict_SetItemString(moduleDict, "_sizeof_double", PyLong_FromLong(sizeof(double)));
     PyDict_SetItemString(moduleDict, "_sizeof_size_t", PyLong_FromLong(sizeof(size_t)));
+    PyDict_SetItemString(moduleDict, "_LONG_MIN", PyLong_FromLong(LONG_MIN));
+    PyDict_SetItemString(moduleDict, "_LONG_MAX", PyLong_FromLong(LONG_MAX));
+    PyDict_SetItemString(moduleDict, "_LLONG_MIN", PyLong_FromLongLong(PY_LLONG_MIN));
+    PyDict_SetItemString(moduleDict, "_LLONG_MAX", PyLong_FromLongLong(PY_LLONG_MAX));
 
     // Make a tuple of strings that gives more info about the platform and build.
     PyObject* PlatformInfo = PyList_New(0);